How Does Radio Transmission Work?

Like many things in our universe, radio transmissions get more interesting the more you think about them. Without them, we obviously wouldn't have radio stations or radar, but they're also behind some of the technologies we take most for granted, like cell phones, satellite navigation, and Wi-Fi (or pretty much anything wireless). At face value, … Continue reading How Does Radio Transmission Work?

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Stonehenge: Almost Definitely Not Built by Aliens

Stonehenge is one of prehistory's engineering marvels. Many of us picture it as a ruined circle of stone, associated with druids, all kinds of astronomical observations, and maybe even magic. Unfortunately, most of that image is probably inaccurate. Fortunately, though, there is plenty of evidence that Stonehenge was both important and impressive. One of the … Continue reading Stonehenge: Almost Definitely Not Built by Aliens

Skeptical Science Theater 3000: Time Travel

Settle in for another episode of the critically acclaimed (OK, emphasis on critical) Skeptical Science Theater 3000! Will we ever invent it? What consequences might it have for the basic framework of cause and effect, the scientific method as we know it, and life itself? Today's topic: time travel!  Mechanical Engineer Husband (MEH): That was … Continue reading Skeptical Science Theater 3000: Time Travel

Science in Fiction: Kim Stanley Robinson and Living on Other Planets

You'll notice I didn't say "terraforming," even though that's what we usually think of in connection with human colonies beyond Earth. Really, there's a whole range of possibilities for how we might survive on other worlds, and only some of them involve remaking a whole planet. Usually I focus on one book, but this time … Continue reading Science in Fiction: Kim Stanley Robinson and Living on Other Planets